BREAKING: Subway Bomber Identified by Russian Intelligence

The explosion inside a St. Petersburg, Russia, subway station on Monday that killed 14 people was the work of a suicide bomber with ties to radical Islamist groups.

Security officials in Kyrgyzstan — a predominantly Muslim former Soviet republic — identified the suspect as Akbarzhon Djalilov, a 22-year-old Kyrgyz-born Russian citizen, according to the U.K. Telegraph.

Although the Islamic State group had not yet claimed responsibility for the bombing, its supporters celebrated the attack on social media, and security officials believed Djalilov may have been encouraged by the radical terrorist organization.

Djalilov had allegedly planted an unexploded device that was found and defused at another train station shortly after the deadly blast. Investigators matched DNA found on that bomb to Djalilov’s DNA, the Russian Investigative Committee said, according to CNN.

“Criminalists found his DNA on a bag with a bomb left at the Ploshchad Vosstaniya metro station,” the committee explained in a statement, adding that surveillance footage also contributed to their conclusions.

Russian President Vladimir Putin was in St. Petersburg on Monday when the explosion occurred, and he spoke to news agencies soon after.

“The causes are not yet clear, and so it’s still early to talk about that, the investigation will show,” Putin said at the time. “But, naturally, we always examine all versions, ordinary and criminal — above all, incidents of a terrorist character.”

One Islamic State group supporter claimed that the attacks were the work of the terrorist group and were retaliation for Russia supporting Syrian President Bashar al-Assad’s fight against the Islamic State group and other rebel groups in Syria.

The terrorist organization also recently circulated a poster showing a jihadi blowing up the Kremlin, accompanied by the message “Kill them where you find them,” according to Breitbart.

This wouldn’t be the first time the Islamic State group was responsible for an attack on Russian transportation, as the group took responsibility for an October 2015 bomb that killed 224 people on a civilian airplane.